. British Antarctic expedition, 1907-9, under the command of Shackleton : reports on the scientific investigations ; geology. Scientific expeditions; Natural history; Geology; Paleontology; Petrology; Ice. OF THE ROSS ARCHIPELAGO 141 rounded forms within the hornblende along with grains of magnetite. Fig. la shows the normal course of the resorption and Fig. lb an unusual case where it has taken place on one side of the augite only, with the development of the hornblende in parallel position. The hornblende is a common brown variety with pleochroism from brown to yellow-brown, and is perf
. British Antarctic expedition, 1907-9, under the command of Shackleton : reports on the scientific investigations ; geology. Scientific expeditions; Natural history; Geology; Paleontology; Petrology; Ice. OF THE ROSS ARCHIPELAGO 141 rounded forms within the hornblende along with grains of magnetite. Fig. la shows the normal course of the resorption and Fig. lb an unusual case where it has taken place on one side of the augite only, with the development of the hornblende in parallel position. The hornblende is a common brown variety with pleochroism from brown to yellow-brown, and is perfectly euhedral where it does not impinge on olivine or augite, with the faces M (110), B (010), A (100), and dome terminations. Felspar occasionally forms large lath-shaped crystals comparable in size to the above-named. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Shackleton, Ernest Henry, Sir, 1874-1922. London : Published for the expedition by W. Heinemann
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Keywords: ., boo, bookcentury1900, booksubjectgeology, booksubjectpaleontology
